beautiful black-necked swans cygnus melancoryphus swim in a blue lake.

bird water waterbird wildlife duck animal waterfowl shore reflection beak nature beautiful black-necked swans cygnus melancoryphus swim blue lake necks elegantly curved glare lago argentino calafate black necked swan swans waterfowl necked melancoryphus lake picturesque elegance patagonia argentina south america black-necked ornithology cygnus swim black plumage graceful curve neck elegant sparkle glistening calm shiny light white glittering glitter ripple clear sun glare calafate argentino nature patagonia blue birds beautiful feather wild bird wildlife